netdev - Re: tbf/htb qdisc limitations

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Message-Id: <20101014023407.80ccef7e.billfink@mindspring.com>
Date:	Thu, 14 Oct 2010 02:34:07 -0400
From:	Bill Fink <billfink@...dspring.com>
To:	Eric Dumazet <eric.dumazet@...il.com>
Cc:	Jarek Poplawski <jarkao2@...il.com>,
	Rick Jones <rick.jones2@...com>,
	Steven Brudenell <steven.brudenell@...il.com>,
	netdev@...r.kernel.org
Subject: Re: tbf/htb qdisc limitations

On Thu, 14 Oct 2010, Eric Dumazet wrote:

> Le mercredi 13 octobre 2010 à 23:36 -0400, Bill Fink a écrit :
> 
> > I was just trying to do an 8 Gbps rate limit on a 10-GigE path,
> > and couldn't get it to work with either htb or tbf.  Are you
> > saying this currently isn't possible?  Or are you saying to use
> > this hfsc mechanism, which there doesn't seem to be a man page
> > for?
> 
> man pages ? Oh well...
> 
> 8Gbps rate limit sounds very optimistic with a central lock and one
> queue...
> 
> Maybe its possible to split this into 8 x 1Gbps, using 8 queues...
> or 16 x 500 Mbps

Not when I'm trying to rate limit a single flow.

				-Bill
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